[nas.ty] adj nas.ti.er ; -est [ME] (14c) 1 a: disgustingly filthy b: physically repugnant
2: indecent, obscene
3: mean, tawdry
4. a: extremely hazardous or harmful "had a ~ climb to reach the summit" b: causing severe pain or suffering "a ~ wound" c: sharply unpleasant: disagreeable "~ weather"
5. a: difficult to understand or deal with: vexatious "a ~ problem" b: psychologically unsettling: trying "a ~ fear that she was lost"
6: lacking in courtesy or sportsmanship "a ~ trick" syn see dirty -- nas.ti.ly adv -- nas.ti.ness n -- nasty n